James g



(N o'ModeL) J. G. HILL.

- Slate Fastener.

No. 241,983. Patented May 24,1B8I'.

UNITED STATES PATENT OFFICE.

JAMES G. HILL, OF WASHINGTON, DISTRICT OF COLUMBIA.

SLATE-FASTENER.

SPECIFICATION forming part of Letters Patent No. 241,983, dated May 24,1881.

To all whom it may concern.-

Be it known that I, JAMES G. HILL, of Washington, in the District ofColumbia, have invented a new and useful Improvement in Slate-Fasteners,of which the following is a clear, full, and exact description,reference being had to the accompanying drawings, making a part of thisspecification, in which Figure 1 shows my improved method of fasteningslate to T-iron purlins. Fig. 2 is a modification of the same, adaptingthe fastenings to angle-iron purlins. Fig. 3 shows another modificationof my invention when made of wire. Fig. 4 is a side view of thepurliuwith the fastening applied thereto. Fig. 5 is a view of the wedge.

To enable others skilled in the art to make and use my invention, I willproceed to describe the exact manner in which I have carried it out.

My invention has reference to securing root'- ing-slate in position; andit consists in the combination of devices hereinafter described andclaimed.

In the drawings, A represents a T-iron purlin, and a a a slates securedin position.

B represents a piece of strap-iron bent into the shape as shown, the endI) passing through a slot made in the side of slate a, and bent at aright angle down upon the surface of the slate. The other end of thestrap is bent at a right angle in the opposite direction, and ofsufficient length to press firmly against the purlin, as shown in Fig.1, and thus to steady the strap. Near the lower bend of the strapApplication filed April 12, 1881.

(No model.)

I make the slot 0 to receive the metal wedge D, which is tapering and ofsufficient length to be adaptethwhen driven home, to be turned orclinched over the opposite edge of thepurlin.

If wire be used instead of strap-iron, it is to be bent in the form E,(shown in Fig. 3,) and the bottom loop in the wire serves for the slotthrough which to drive the wedge. I prefer, however, to use thestrap-iron as being better adapted for the work.

When an gleiron purlins are used, as shown in Fig. 2, it is evident thatthe lower end of the strap may be bent around the edge F of the iron andthe wedge for tightening introduced between the iron and the bent strapwithout departing from the spirit of my invention.

I am aware that strapiron has been used for fastening slates to thepurlins; but with them have been used screwthreaded bolts with nuts, andthese bolts have their heads countersunk in the slate, rendering thefastening costly. The object of my present invention is to simplify andcheapen the article.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The iron strap B, bent as described, and provided with the slot 0. incombination with the wedge D, substantially as and for the purpose setforth.

JAS. G. HILL.

Witnesses:

R. K. EVANS, J N0. L. Common.

